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2. Electronic line judge - Wikipedia

   en.wikipedia.org/wiki/Electronic_line_judge

   The net cord "Let" sensor was a simple piezoelectric device, initially a guitar pickup, to detect if the tennis ball touched the net during the service delivery. The service line sensors, net-cord sensor, legal serve and foot fault devices were turned "on" in unison during the process of a player serving the ball at the beginning of each point ...

3. Prince Sports - Wikipedia

   en.wikipedia.org/wiki/Prince_Sports

   The company was founded in 1970 by Robert Hirt McClure (1893–1991) of Princeton, New Jersey (the origin of the company's name) as a manufacturer of tennis-ball machines, and soon after, rackets. Howard Head , founder of the Head sporting goods company, took tennis lessons following his retirement and used a Prince tennis ball machine, but was ...

4. Category:Tennis equipment - Wikipedia

   en.wikipedia.org/wiki/Category:Tennis_equipment

   Stringing machine; Strings (tennis) T. Tennis technology; Tennis ball; W. Wilson K-Factor; Wilson ProStaff Original 6.0 This page was last edited on 8 October ...

5. Wilson Sporting Goods - Wikipedia

   en.wikipedia.org/wiki/Wilson_Sporting_Goods

   The Wilson Sporting Goods Company is an American sports equipment manufacturer based in Chicago, Illinois.Wilson makes equipment for many sports, among them baseball, badminton, American football, basketball, fastpitch softball, golf, racquetball, soccer, squash, tennis, pickleball and volleyball.

6. Tennis technology - Wikipedia

   en.wikipedia.org/wiki/Tennis_technology

   Originally the tennis ball consisted of rough cloth strips tightly bound together. Eventually the cloth strips became the core, wrapped in twine and covered by a finer cloth or felt hand-stitched around it. [6] In 1972, at the request of Lamar Hunt to televise World Championship Tennis, the tennis ball was manufactured with the optic yellow ...

7. Penn Racquet Sports - Wikipedia

   en.wikipedia.org/wiki/Penn_Racquet_Sports

   In 1910, Penn began manufacturing tennis balls in Jeannette, Pennsylvania. [3] Penn has a subsequent history of innovation in tennis ball design: [4] In 1922, Penn makes the first pressurized ball cans. In 1960, Penn invents a more durable felt cover for the tennis ball by weaving New Zealand wool and artificial fibers together.